sharp v-notch:
Q = 2.5 tan(interior angle/2) H^2.5
sharp rectangular:
Q = .67 L H^1.5
broad crested rectangular:
Q = 3.3 L H^1.5
ogee rectangular:
Q = 4 L H^1.5
Determine max Q, design weir large enough to contain flow.
Remember: The Chinese ideogram for “crisis” is comprised of the characters for “danger” and “opportunity.”
-Steve